[HBASE-28621] PrefixFilter should use SEEK_NEXT_USING_HINT

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.0, 3.0.0-beta-2, 2.5.11, 2.6.2
• Component/s: Filters
• Labels: beginner beginner-friendly pull-request-available
• Assignee: Dávid Paksy
• Reporter: Istvan Toth
• Created: 27/May/24 17:52
• Updated: 07/Nov/24 10:03
• Resolved: 06/Nov/24 07:54

Description

Looking at PrefixFilter, I have noticed that it doesn't use the SEEK_NEXT_USING_HINT mechanism.

AFAICT, we could safely set the the prefix as a next row hint, which could be a huge performance win.

Of course, ideally the user would set the scan startRow to the prefix, which avoids the problem, but the user may forget to do that, or may use the filter in a filterList that doesn't allow for setting the start/stop rows close tho the prefix.

Issue Links

• relates to: HBASE-28634 There is a possibility that data cannot be obtained during reverse fuzzy query.
• links to: GitHub Pull Request #6361
• links to: GitHub Pull Request #6424